Home Physics Motion in a Straight Line Uniform Motion Which of the following is a one dimensional …
Physics Motion in a Straight Line Uniform Motion Single Correct MCQ
Published on: September 12, 2026

Which of the following is a one dimensional motion

A
Landing of an aircraft
B
Earth revolving a round the sun
C
Motion of wheels of a moving trains
D
Train running on a straight track

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Text Solution

Verified by Experts
The correct answer is:
D
Step 1: Understand the definition of one-dimensional motion. One-dimensional motion refers to motion along a straight line where only one coordinate is required to describe the motion. Examples include objects moving back and forth along a straight path.
Step 2: Analyze the options given:
  • Option A: Landing of an aircraft - This involves complex motion including vertical descent and horizontal movement, which is not confined to one dimension.
  • Option B: Earth revolving around the sun - This is a two-dimensional motion, as it involves circular motion around a central body (the sun).
  • Option C: Motion of wheels of a moving train - Wheels can rotate in two dimensions (up/down and forward/backward).
  • Option D: Train running on a straight track - This is one-dimensional motion since the train moves forward or backward along a straight track without changing direction.
Conclusion: The correct choice is Option D as it perfectly exemplifies one-dimensional motion.

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